That's a clever idea steve, I wish I'd thought of that.
T
On 31 Aug 2007, at 20:23, Steve Smith wrote:
> alternatively you could split the image with the seedmask in it so
> as to contain different sets of seed voxels in different images and
> then run them all in parallel.
> Cheers.
>
>
> On 31 Aug 2007, at 19:57, Matt Glasser wrote:
>
>> Tim,
>>
>> The outputs are identical. Thank you for pointing that out.
>> Maybe a future
>> version could support parallelization in this way?
>>
>> Peace,
>>
>> Matt.
>>
>> -----Original Message-----
>> From: FSL - FMRIB's Software Library [mailto:[log in to unmask]]
>> On Behalf
>> Of Tim Behrens
>> Sent: Friday, August 31, 2007 12:18 PM
>> To: [log in to unmask]
>> Subject: Re: [FSL] Parallelise probtrackx
>>
>> Matt - I know this should work, but you might want to check whether
>> it actually does - it is possible that the random seed is fixed at
>> the beginning of the program, so all of your different processes
>> would give you identical outputs.
>>
>> T
>>
>>
>>
>> On 31 Aug 2007, at 12:41, Matt Glasser wrote:
>>
>>> Also, you could split up the number of samples e.g. if you normally
>>> track
>>> with 25000 and have five processors, you could track 5 times with
>>> 5000
>>> samples and add the result. This method is easier if you know a
>>> little
>>> shell scripting.
>>>
>>> -----Original Message-----
>>> From: FSL - FMRIB's Software Library [mailto:[log in to unmask]] On
>>> Behalf
>>> Of Tim Behrens
>>> Sent: Friday, August 31, 2007 5:39 AM
>>> To: [log in to unmask]
>>> Subject: Re: [FSL] Parallelise probtrackx
>>>
>>> Just split your seed mask into as many masks as you have processors,
>>> set them off independently, and add up the answers at the end.
>>>
>>> Cheers
>>>
>>> T
>>> On 31 Aug 2007, at 09:25, Ravi Shetty wrote:
>>>
>>>> I know it is possible to parallelise bedpostx but is it also
>>>> possible to parallelise probtrackx? If so is it
>>>> done using the same method? Thanks.
>>>>
>>>> -Ravi
>
>
> ----------------------------------------------------------------------
> -----
> Stephen M. Smith, Professor of Biomedical Engineering
> Associate Director, Oxford University FMRIB Centre
>
> FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
> +44 (0) 1865 222726 (fax 222717)
> [log in to unmask] http://www.fmrib.ox.ac.uk/~steve
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